Computer Hacking Forensic Investigator (CHFI v10) — Question 494

In a virtual test environment, Michael is testing the strength and security of BGP using multiple routers to mimic the backbone of the Internet. This project will help him write his doctoral thesis on "bringing down the Internet". Without sniffing the traffic between the routers, Michael sends millions of RESET packets to the routers in an attempt to shut one or all of them down. After a few hours, one of the routers finally shuts itself down. What will the other routers communicate between themselves?

Answer options

• A. The change in the routing fabric to bypass the affected router
• B. More RESET packets to the affected router to get it to power back up
• C. RESTART packets to the affected router to get it to power back up
• D. STOP packets to all other routers warning of where the attack originated

Correct answer: A

Explanation

The correct answer is A because when a router goes down, the remaining routers must adjust their routing tables to reroute traffic around the affected router, ensuring continued connectivity. Options B and C are incorrect since sending RESET or RESTART packets would not facilitate the recovery of a router that has already shut down. Option D is also incorrect as there is no protocol known as STOP packets in BGP for warning other routers about an attack.